You're still not thinking of what to do with Parker, though.
So Green starts alongside Mills. Okay. That means Parker and Manu are the first guards off the bench. Right now, that pair has a +5.6 net rating. Mills and Manu have a +12.6 net rating. Furthermore, the lineup that Patty does best with that doesn't include Manu is Gasol, LMA, Kawhi, Green. That means starting Pau again. Good luck with a bench consisting of Dedmon, Lee, Fathead, Manu, and Parker doing anything offensively, especially if Manu and Parker are having one of their oldman off nights.
This is why Patty (and Gasol) continue to come off the bench:
http://stats.nba.com/lineups/advance...sort=MIN&dir=1
You can see that Dedmon replacing Gasol in the starting lineup improves them from a 7.3 net to an 8.4 net. But check out what happens when Gasol and Patty come in for Dedmon and Parker. +23 net. Absolutely killing teams.